Modal Verbs - How to Use 'Must' in English

source: Oxford Online English      2016年6月8日
See the full version: http://www.oxfordonlineenglish.com/us...
'Must' can have many different meanings in English. In this video, you can learn about
- How to use 'must' to talk about obligations and rules.
- How to use 'mustn't' to express prohibition.
- How to use 'must' to give strong advice.
- How to use 'must' to make deductions.
- The negatives of 'must' when 'must' has different meanings.
- The past forms of 'must' in different meanings.

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